docs: name the Stall and the Correction in CONTEXT.md

Glossary-only change; no code touched.

Charting the admin dashboard map (#114) settled four terms the glossary did not carry:

- **Orphan Series** (#125) — a Series no Reader bookmarks; a state of the Series, never a Lifecycle bucket.
- **Lane Pass** (#117) — one sweep of a Poll Lane, including a pass that declined to work and why.
- **Forced Poll** (#119, #120) — a Poll the owner asks for by marking the Series, which jumps the waiting rules but never the Site's refusal, and which may replace a Cover.
- **Paused Lane** (#119) — a bounded, restart-surviving stop on one Site, distinct from the deploy-time kill switch.

**Acquisition** is amended in the same pass: establishing a Cover is no longer unique to it, since a Forced Poll can replace one.

Reviewed-on: #128
Co-authored-by: Sulthan Zaki <sultankiki05@gmail.com>
Co-committed-by: Sulthan Zaki <sultankiki05@gmail.com>

CONTEXT.md

@@ -43,6 +43,13 @@ Readers: Progress, Favourite, Lifecycle bucket. Facts about the Series itself be
 to the Series, not here.
 _Avoid_: entry, item, record, subscription
 
+**Orphan Series**:
+A Series no Reader bookmarks. Removing a Bookmark never removes the Series, so the row
+outlives every relationship to it: nothing reads it, no Poll visits it, and it still owns
+a Cover. A state of the Series, not a Lifecycle bucket — it says how many Readers hold it,
+never anything about a Reader.
+_Avoid_: dangling, unused, dead series, stale
+
 **Library**:
 One of the two halves of the collection — manga or novel — selected by a Bookmark's
 `kind`. The web UI and the userscripts each address exactly one Library at a time.
@@ -76,6 +83,41 @@ asked. Every Site has exactly one and no Lane can slow, block or borrow from ano
 a Reader never has one and never influences one.
 _Avoid_: worker, queue, scheduler, batch, wave
 
+**Lane Pass**:
+One sweep of a Poll Lane over the Series due on its Site: what it found waiting, how many it
+read, and whether it declined to work at all. A fact about the Lane rather than about any
+Series — a pass that read nothing is still a pass, and one that declined carries the reason it
+declined, since a Lane resting and a Lane stuck look identical from a count alone. Its record
+outlives the process that made it: "the poller has done nothing for six hours" is only
+answerable by something written down.
+_Avoid_: run, cycle, tick, batch, poll history
+
+**Forced Poll**:
+A Poll the owner asks for by hand instead of waiting for the Series's turn. It jumps its
+Lane's queue and ignores every waiting rule — the rest between Polls, a Sighting standing
+in for a check, a Series only finished Readers hold — but never overrules a Site that is
+refusing us, the Lane's spacing between fetches, or a Series with no page to fetch. Asked
+for by marking the Series, never by commanding the poller, so it happens on the Lane's
+next pass rather than at the moment of asking.
+It also takes whatever Cover the Site publishes today: asking for one is asking to accept the
+page as it now stands, so it is the only read after Acquisition that can replace a Cover.
+_Avoid_: manual poll, refresh, retry, force refresh
+
+**Paused Lane**:
+A Poll Lane the owner has stopped for a bounded time. It makes no Polls until the pause
+expires, so its Series stay due and unstamped exactly as they do when a Site cannot be
+reached. Every pause carries an expiry — a Lane cannot be stopped indefinitely — and it
+outlives a restart, being a fact about the Site rather than about the running process.
+_Avoid_: disabled, off, stopped, suspended, kill switch (that is the deploy-time switch)
+
+**Stall**:
+A Poll Lane that owed Polls, made none, and has nothing to say for it. Distinct from the
+two conditions it resembles: a Site that refuses is exercising the pace it is entitled to,
+and a Lane the owner paused was told to stop — a Stall is neither asked for nor explained.
+It is the one fault no Reader surface can show: every Bookmark still opens, Progress still
+syncs, and Latest Chapter is quietly wrong for as long as it lasts.
+_Avoid_: outage, downtime, failure, backlog, lag
+
 **Sighting**:
 What a Reader's browser happened to see of a Series's Latest Chapter while that Reader
 was on the page. It reports the same fact as a Poll but carries none of its authority:
@@ -88,11 +130,19 @@ _Avoid_: client report, user poll, observation, claim
 The single read of a Series page made the moment the Series first exists, giving it
 both its Latest Chapter and its Cover without waiting for the Lane's pace. Distinct
 from a Poll in the two ways that matter: a Reader is present — it is triggered by
-their first Bookmark of that Series — and it is the only read that establishes a
+their first Bookmark of that Series — and it establishes a Cover rather than refreshing
-Cover rather than refreshing facts. It happens once in a Series's life; every later
+facts, which no Poll does unless the owner forces one. It happens once in a Series's
-read of the same page is a Poll.
+life; every later read of the same page is a Poll.
 _Avoid_: initial poll, first fetch, prefetch, warm-up
 
+**Correction**:
+A Latest Chapter the owner sets by hand, on a Series no Poll can read. It reports the
+same fact as a Poll and carries even less authority than a Sighting: the next Poll
+overwrites it, so does any Reader's Sighting, and it is never a floor or a pin. It
+exists only because the Site page is unreadable — where a Poll can read the page, the
+Poll is the answer and a Correction is not wanted.
+_Avoid_: override, pin, manual value, fix
+
 **New Chapter**:
 The state where Latest Chapter is ahead of Progress. The single condition the ember
 accent is permitted to signal.